AA 1428 then AA 1611 at Phoenix
DES → Phoenix → Las Vegas
Timetable, Phoenix time
10:29AA 1428 from DES at the gate
08:16AA 1611 to Las Vegas leaves the gate
21 h 47 apart on the timetable, overnight
AA 1611 leaves 21 h 47 after AA 1428 arrives on the timetable: more than half a day, so not a connection we count.